/Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/MeshModelingToolsExp/Public/MeshSelectionTool.h
Optimize the selection border by removing "fin" triangles and including "ear" triangles
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(CallInEditor, Category=SelectionEdits, Meta=(DisplayPriority=8)) void OptimizeBorder()